Upcoming MBC melodrama 'Triangle' has released a dramatic teaser video featuring the three main actors, Lee Bum Soo, Jaejoong, and Siwan.

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Through these quick character introductions, you can really get the sense that Jaejoong is a tough man who is confident in himself but searching for more, whereas Siwan is the cold son raised in a wealthy family, intellectual and gifted but hard to approach.

Check out the teaser above! �The drama will premiere on May 5.